Mold remediation in Fort Lauderdale, Florida
Fort Lauderdale has two mold problems and they are not the same problem: the water table east of Federal, and mid-century houses running modern air conditioning through undersized returns.
Housing stock Fort Lauderdale shares with Palm Beach Gardens — which is why the failure modes below are the same in all of them.
The housing stock east of US-1 is largely concrete block and stucco built between the late 1940s and the mid 1960s — terrazzo floors, low slabs, and originally no central air at all. Those houses were designed to breathe. Jalousie windows, cross ventilation, and high ceilings did the humidity management, and they did it reasonably well.
Then the jalousies got replaced with impact glass, the house got tightened up, and central air went in wherever there was room for it. What you end up with in Victoria Park or Poinciana Park is a sealed envelope, a slab that was never vapor-sealed sitting a few feet above the water table, and an air handler in an interior closet with a return that is undersized for the equipment.
On the Isles and along the New River the water table story gets more direct. Slab moisture, seawall-adjacent capillary action, and salt air corroding coils on the beach side of Coral Ridge and Lauderdale Beach. We do a lot of work between Sunrise and Oakland Park east of Federal, and it is rarely a dramatic leak — it is a house sitting at 66% relative humidity for eight months.
What we see most often in Fort Lauderdale
- Short-cycling oversized systemsA four-ton replacement in a house that needed three. The thermostat is satisfied in six minutes, the coil never runs long enough to pull latent heat, and the house is cold and damp at the same time.
- Interior-closet air handlers with platform returnsVery common in the 1950s and 60s stock. If the platform cavity is unsealed it draws air from under the house or out of the wall assembly on every cycle.
- Slab wicking in the bottom of exterior wallsThe lower four inches of drywall on a block wall, especially on the north and east elevations and in closets on exterior corners.
- Coil corrosion on the beach sideSalt air east of the Intracoastal eats aluminum fins. A pitted, corroded coil holds moisture and debris differently than a clean one.
- Terrazzo and tile trapping moistureA vapor-open slab under a vapor-closed floor covering added in a 2010s renovation pushes the moisture sideways into the wall base.
- Short-term rental turnoverA large share of the east-side housing stock is rented by the week. Between guests the air conditioning gets set high or switched off, and wet towels and linens are frequently left in a closed house. It is seasonal vacancy compressed into a three-day cycle.
What we do in Fort Lauderdale
The same six services run across Broward County, and which of them a job turns into depends on what is actually happening — in Fort Lauderdale that usually starts with short-cycling oversized systems.
Fort Lauderdale neighborhoods and ZIP codes
- Victoria Park
- Rio Vista
- Coral Ridge
- Las Olas Isles
- Sailboat Bend
- Poinciana Park
- Colee Hammock
- Harbordale
- Lauderdale Beach
- Croissant Park
- Riverside Park
- Tarpon River
- Dorsey-Riverbend
- Melrose Park
- Edgewood
ZIP codes served: 33301 · 33304 · 33305 · 33306 · 33308 · 33311 · 33312 · 33315 · 33316
Mold questions from Fort Lauderdale homeowners
Why is my Fort Lauderdale house humid even with the AC running constantly?
Running constantly is usually the tell that something else is wrong, but the classic version of this is the opposite: a system that is too large, satisfies the thermostat fast, and shuts off. Dehumidification is a function of run time. A correctly sized system running longer cycles at lower capacity removes far more water than an oversized one blasting for six minutes. In older east-side houses we also frequently find an unsealed return pulling humid air into the system from outside the conditioned envelope.
Do waterfront homes on the Isles have worse mold problems?
Different, not automatically worse. The water table is high enough that slab moisture is a real factor, and salt air is hard on equipment. But the finger-isle homes are also frequently well maintained and heavily renovated. What we see there is more often a renovation detail — a vapor-closed floor over a vapor-open slab, or an impact window retrofit with a sealant failure — than general neglect.
Can you work in a Victoria Park historic home without tearing it apart?
Yes. Containment is designed to be surgical, and on plaster and original millwork the approach is different than on modern drywall — more cleaning of semi-porous material, less demolition. We will tell you before we start what has to come out and what can be saved, and we would rather over-communicate on a house somebody has spent years restoring.
We rent the house out short-term. What should the air conditioning be left at between guests?
Set a humidity target rather than a temperature — around 55% RH — and leave it there permanently rather than adjusting it per booking. The turnover gap is short but it repeats fifty times a year, and a house that spends every changeover at 70% humidity accumulates the same result as one closed for a season. Also worth telling your cleaner to run the bath fans and not to leave linens in a closed washer.
Other areas we cover
Serving Fort Lauderdale and the rest of Broward County
Tell us the neighborhood and what you are seeing. The failure modes in Fort Lauderdale are specific enough that the call usually narrows it before anyone drives out.